ARM: 7602/1: Pass real "__machine_arch_type" variable to setup_machine_tags() procedure

This modification is needed to proper boot the custom machines with
the IDs that are not described in the mach-types.h table.
Signed-off-by: NAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/setup.c

@@ -733,7 +733,7 @@ void __init setup_arch(char **cmdline_p)
 	setup_processor();
 	mdesc = setup_machine_fdt(__atags_pointer);
 	if (!mdesc)
-		mdesc = setup_machine_tags(__atags_pointer, machine_arch_type);
+		mdesc = setup_machine_tags(__atags_pointer, __machine_arch_type);
 	machine_desc = mdesc;
 	machine_name = mdesc->name;